Well now there’s a new form of shaming directed at inanimate objects, in this case polyhedral dice, created by frustrated roleplaying gamers who are tired of bad die rolls ruining a perfectly good campaign:

From the NeatoShop

Personally I don't see why you struggle with the point of these shaming memes on the basis you name. It's not about the dog (or the dice) being able to understand the message written on the sign: it's a joke, pure and simple, and DUH, obviously the animal (or object) being shamed isn't the target audience. It's just a form of socializing through commiseration: other dog owners/dice rollers will get the message, and be able to share their own stories, and a good laugh, and life goes on. What's the big mystery for you to get?

I had a friend who "worked" dice punishment into the game by placing his d20 in a bag full of crappy d6 and beating them mercilessly against the kitchen counter. The d20 never seemed to learn its lesson though, and now that I think about it maybe that guy just had some serious anger issues...

I (or my character) decided to cook a meal for a guest. I botched my cooking skill roll, making the NPC sick. So I tried to help him and rolled my first aid skill. I botched that, too, killing the man.

My character was a professional cook who accidentally killed a useful NPC with food.